feat: refactor code

lib/feature/shop/presentation/bloc/shop_bloc.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../../domain/use_cases/ad_reward_usecase.dart';
+import '../../domain/use_cases/buy_card_usecase.dart';
+import '../../domain/use_cases/get_shop_usecase.dart';
+import '../../domain/use_cases/purchase_usecase.dart';
+import '../../domain/use_cases/select_card_usecase.dart';
+import 'shop_event.dart';
+import 'shop_state.dart';
+import 'shop_status.dart';
+
+class ShopBloc extends Bloc<ShopEvent, ShopBlocState> {
+  final GetShopUseCase getShopUseCase;
+  final BuyCardUseCase buyCardUseCase;
+  final SelectCardUseCase selectCardUseCase;
+  final PurchaseUseCase purchaseUseCase;
+  final AdRewardUseCase adRewardUseCase;
+
+  ShopBloc(
+    this.getShopUseCase,
+    this.buyCardUseCase,
+    this.selectCardUseCase,
+    this.purchaseUseCase,
+    this.adRewardUseCase,
+  ) : super(ShopBlocState.initial()) {
+    on<LoadShopEvent>((event, emit) => _load(emit));
+
+    on<BuyCardEvent>((event, emit) =>
+        _action(emit, () => buyCardUseCase(event.cardId)));
+
+    on<SelectCardEvent>((event, emit) =>
+        _action(emit, () => selectCardUseCase(event.cardId)));
+
+    on<PurchaseEvent>((event, emit) => _action(
+        emit,
+        () => purchaseUseCase(PurchaseParams(
+              store: 'bazaar',
+              kind: event.kind,
+              productId: event.productId,
+              token:
+                  'dev-${event.kind}-${event.productId}-${DateTime.now().millisecondsSinceEpoch}',
+            ))));
+
+    on<AdRewardEvent>((event, emit) => _action(
+          emit,
+          () async {
+            final res = await adRewardUseCase(
+                'dev-ad-${DateTime.now().millisecondsSinceEpoch}');
+            if (res is DataSuccess) {
+              return const DataSuccess('سکه رایگان دریافت شد');
+            }
+            return DataError<String>(res.error!);
+          },
+        ));
+  }
+
+  Future<void> _load(Emitter<ShopBlocState> emit) async {
+    emit(state.copyWith(loadStatus: ShopLoading()));
+    final res = await getShopUseCase(const NoParams());
+    if (res is DataSuccess) {
+      emit(state.copyWith(loadStatus: ShopLoaded(res.data!)));
+    } else {
+      emit(state.copyWith(loadStatus: ShopLoadError(res.error!)));
+    }
+  }
+
+  /// اجرای یک عملیات، نمایش وضعیت و سپس بازخوانی کاتالوگ.
+  Future<void> _action(
+    Emitter<ShopBlocState> emit,
+    Future<DataState<String>> Function() action,
+  ) async {
+    if (state.busy) return;
+    emit(state.copyWith(actionStatus: ActionLoading()));
+    final res = await action();
+    if (res is DataSuccess) {
+      emit(state.copyWith(actionStatus: ActionSuccess(res.data!)));
+      await _load(emit);
+    } else {
+      emit(state.copyWith(actionStatus: ActionError(res.error!)));
+    }
+  }
+}

lib/feature/shop/presentation/bloc/shop_event.dart

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+abstract class ShopEvent {}
+
+class LoadShopEvent extends ShopEvent {}
+
+class BuyCardEvent extends ShopEvent {
+  final String cardId;
+  BuyCardEvent(this.cardId);
+}
+
+class SelectCardEvent extends ShopEvent {
+  final String cardId;
+  SelectCardEvent(this.cardId);
+}
+
+class PurchaseEvent extends ShopEvent {
+  final String kind;
+  final String productId;
+  PurchaseEvent(this.kind, this.productId);
+}
+
+class AdRewardEvent extends ShopEvent {}

lib/feature/shop/presentation/bloc/shop_state.dart

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+import 'shop_status.dart';
+
+class ShopBlocState {
+  final ShopLoadStatus loadStatus;
+  final ShopActionStatus actionStatus;
+
+  ShopBlocState({required this.loadStatus, required this.actionStatus});
+
+  factory ShopBlocState.initial() =>
+      ShopBlocState(loadStatus: ShopInitial(), actionStatus: ActionIdle());
+
+  bool get busy => actionStatus is ActionLoading;
+
+  ShopBlocState copyWith({
+    ShopLoadStatus? loadStatus,
+    ShopActionStatus? actionStatus,
+  }) =>
+      ShopBlocState(
+        loadStatus: loadStatus ?? this.loadStatus,
+        actionStatus: actionStatus ?? this.actionStatus,
+      );
+}

lib/feature/shop/presentation/bloc/shop_status.dart

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+import '../../domain/entities/shop_entities.dart';
+
+abstract class ShopLoadStatus {}
+
+class ShopInitial extends ShopLoadStatus {}
+
+class ShopLoading extends ShopLoadStatus {}
+
+class ShopLoaded extends ShopLoadStatus {
+  final ShopData data;
+  ShopLoaded(this.data);
+}
+
+class ShopLoadError extends ShopLoadStatus {
+  final String message;
+  ShopLoadError(this.message);
+}
+
+/// وضعیتِ یک عملیات (خرید/انتخاب/تبلیغ).
+abstract class ShopActionStatus {}
+
+class ActionIdle extends ShopActionStatus {}
+
+class ActionLoading extends ShopActionStatus {}
+
+class ActionSuccess extends ShopActionStatus {
+  final String message;
+  ActionSuccess(this.message);
+}
+
+class ActionError extends ShopActionStatus {
+  final String message;
+  ActionError(this.message);
+}